12520404000 has 576 divisors, whose sum is σ = 49453867008. Its totient is φ = 2979072000.

The previous prime is 12520403999. The next prime is 12520404047. The reversal of 12520404000 is 40402521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14507569 + ... + 14508431.

It is an arithmetic number, because the mean of its divisors is an integer number (85857408).

Almost surely, 2^12520404000 is an apocalyptic number.

12520404000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12520404000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24726933504).

12520404000 is an abundant number, since it is smaller than the sum of its proper divisors (36933463008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12520404000 is a wasteful number, since it uses less digits than its factorization.

12520404000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

Adding to 12520404000 its reverse (40402521), we get a palindrome (12560806521).

The spelling of 12520404000 in words is "twelve billion, five hundred twenty million, four hundred four thousand".